How Long to return to previous IP Profile?

Rik · Sep 15, 2009, 10:57:22

It certainly could, it seems to have been brief.

Odos · Sep 15, 2009, 15:50:45

Just a quick update for information purposes, Brian in support has got BT to manually drop my SNR target to 9db. At the moment I'm now connected at a sync of 3872 on 9db.

Only time will tell if my line can hold this

Rik · Sep 15, 2009, 15:53:10

Score one for Brian.

Sebby · Sep 16, 2009, 01:04:19

Quote from: Odos on Sep 15, 2009, 15:50:45
Just a quick update for information purposes, Brian in support has got BT to manually drop my SNR target to 9db. At the moment I'm now connected at a sync of 3872 on 9db. Only time will tell if my line can hold this

That's impressive - BT are notoriously difficult when it comes to manually adjusting the target SNRM downwards.

Odos · Sep 17, 2009, 16:01:35

Further update. My line held the 9db till today when it suddenly did a re-sync at 12:36. No obvious reason why, it was still showing the full 9db margin. As far as I can tell from the logs, it just dropped once and re-connected first time BUT when it re-connected it was at 15db, it didn't appear to attempt a connection at 9db or 12db just right up to 15db. And that makes me believe if I had just switched it off and back on it most likely would have jumped back up.

From this I'm assuming two things. (1) My line is subject to some outside part time interference somewhere along it's long length. (2) The system doesn't like to be manually over-ridden hence no attempt at an intermediate margin just a straight jump back up to 15db after a single connection drop

Oh well at least support tried for me

Rik · Sep 17, 2009, 16:05:31

It could be the error count which triggered the re-sync, Tony.

Odos · Sep 17, 2009, 16:50:20

Quote from: Rik on Sep 17, 2009, 16:05:31
It could be the error count which triggered the re-sync, Tony.

Could well be Rik, though it wasn't all that much more than I get on 15db. Up until it dropping it was around 3800 for the 2 days. Well whatever it was I now know that I'm stuck at 15db margin. Unless I go back to the old speedtouch router, with that I can tweak the margin down to 10db

Rik · Sep 17, 2009, 16:54:24

BT seem to be indulging in some strange tricks, atm, Tony - one of which being the defined 'acceptable speeds' for a connection, so I wonder whether they are deliberately withholding investment to make larger profits.

Odos · Sep 17, 2009, 17:00:49

Quote from: Rik on Sep 17, 2009, 16:54:24
BT seem to be indulging in some strange tricks, atm, Tony - one of which being the defined 'acceptable speeds' for a connection, so I wonder whether they are deliberately withholding investment to make larger profits.

As a coincidence, I heard an advert on our local radio today for BT broadband, line and something else ( can't remember what as I wasn't paying much attention) but I do remember thinking to myself "how are they going to manage that". Maybe it's by the method you've mentioned

Rik · Sep 17, 2009, 17:06:34

BT Retail are launching WBC themselves now, so that might have been the ad you heard. When you look at my most recent (WBC) speed test, though, you realise that any claims they make are now a bit of a joke (certainly the FTR seems to have been thrown away...):

Download speed achieved during the test was - 1595 Kbps
For your connection, the acceptable range of speeds is 600-7150 Kbps.
Additional Information:
Your DSL Connection Rate :4632 Kbps(DOWN-STREAM), 760 Kbps(UP-STREAM)
IP Profile for your line is - 3500 Kbps

sparky · Sep 24, 2009, 10:30:32

Just to finalize this one, as far as I'm concerned anyways,

My router held firm for 17 days, no change of connection speed, no re-syncs. So, I did a Power cycle and re-connected, but still no change to the noise margin, still sat at 15db.

Emailed support and James has managed to get BT to reset it manually, so I am now back to a 5db noise margin and my original connection speed. So many thanks to support, but BT's software obviously doesn't always do its job after a clean 14 days.

Cheers for help guys, Sparky.

Rik · Sep 24, 2009, 10:32:02

Hi Sparky

That's one of the problems with BT, the systems don't always work.

WBC seems better than Max in this respect.

sparky · Oct 09, 2009, 14:21:12

Bl**** BT. I think I have another line problem developing.

The last few days have seen a steady increase in re-synch's in my router log. Yesterday I had 8 "loss of synch" messages throughout the day. We are rural and it seems to get worse with the weather. This isn't a problem to me, I don't use it for gaming, but what is the level at which BT's system will start to increase my noise margin? I seem to remember reading somewhere that it was 10 per hour ?

I have noticed that there has also been an intermittent "crackling" sound on my voice, people that have called me can not hear it, only at my end is it audible. It also seems to tie in with the resynchs when I look at the time stamps. The problem is that if I rang BT, because it is so intermittent, they would test the line and say "all OK". So I'll probably have to wait and see if it goes "harder". Every time I try a quiet line test on 17070 it seems OK.

Just wondering though, how it's going to affect my line profile?

Lance · Oct 09, 2009, 15:49:29

Unless you resync lower than you currently are, then profile will bot be directly affected.

However, if the DLM sees lots of resyncs (normally around 10 within an hour) then this will push up your noise margin, and therefore your sync will fall as will you profile.